—Must we do something to keep our country clean?—__________.

问题描述:

—Must we do something to keep our country clean?—__________.
A.Yes,you needn't.B.Yes,we need.C.Yes,of course.D.No,we mustn't.
这题.有些特别,所以请说明选哪个不选哪个,为什么不选那个

首先回答人称用you不用we,排除BD
其次A中yes和needn't不搭配
所以选C